Support for spinning-spindles



(No Model.)

J. BLAIR.

SUPPORT POR SPINNING SPINDLES.

Patented Sept. 20, 1892.

vweutoz III/zes Blair UNITED STATES PATENT OFFICE.

JAMES BLAIR, OF VORCESTER, MASSACHUSETTS.

SUPPORT FOR SPINNING-SPINDLES.

SPECIFICATION forming part of Letters Patent No. 482,860, datedSeptember 20, 1892.

Application led July 27, 1891. Serial No. 400,780. (No model.)

.To @ZZ whom it may concern:

Be it known that I, JAMEs BLAIR, of Worcester, in the county ofVorcester and State of Massachusetts, have invented certain new anduseful Improvements in Supports for Spinning-Spindles, of which thefollowing is aspecification.

The present invention relates to spindles for supporting the bobbins ofspinning-machines; and it consists in the means for holding the spindlein the upper or bolster bearing.

The improvements are illustrated in the accompanying drawings, wherein--Figure l is a central vertical section of the lmprovements. Fig. 2 is ahorizontal section herelof in a plane indicated by the line 2 2 in A isa portion of the bolster or spindle rail. Extending through thebolster-rail is the bolster-case B, which has a flange c, resting uponthe upper surface of the bolster-rail.

C is an oilcup,`which embraces the lower portion of the bolster-case Band screws onto the same below the bolster-rail. The oil-cup screwstightly against the lower face of the bolster-rail, thereby clampingboth itself and the bolster-case B to the bolster-rail. 4

D is the spindle,which extends down through the bolster-case B, and itslower end seats in a spindle-step b, formed in the bottom of the cup C.The bolster-case B at its upper end is slightly contracted and is boredto a true circle to constitute an upper or bolster bearing c for thespindle. The general bore of the bolster-case below the bearing cisslightly greater in diameter than the spindle, so that the latter turnsin said bore without friction.

Extending through the flange a of the bolster-case B is an oil-inlet d,which communicates with the annular space between the spindle and thebolster-case, immediately beneath the bearing c. A longitudinal groove fon the interior of the bolster-case conducts the oil from the oil-inletCZ to the oil-cup O. A screw-plug E lits inand closes the inlet CZ, thuskeeping dirt and dust out of the oil-cup. The longitudinal groove f isnecessary in order to conduct the oil to the bottom of the oil- 5o cup.The annular space between the spindle and the b01stercase is so small asto be in effect a capillary space, and consequently the oil would not inthe absence of the groove f be conducted freely to the oil-cup. On itsouter surface, within the bolstercase B, the spindle has a spiral grooveg', which carries the oil from the oil-cup to the upper bearing r c forlubricating the latter. Said bearing has on its inner face a groove,which is a continuation of the groove f and which retains the oil pumpedup by the spiral groove g.

Above the bearing c the spindle is reduced in diameter, forming ashoulder h. A screwcap F, preferably of brass, surrounds the upperreduced portion of the spindle, having a slight longitudinal playthereon. This cap screws onto and over the top of the bolstercase B andprevents the spindle being accidentally removed from the bolster-casewhen the bobbin is taken off, since should the spindle be lifted itsshoulder 71, would encounter the cap where the latter embraces thecontracted portion of the spindle. The cap F has immediately surroundingthe spindle a downwardly-extending annular iange m, which lits within anenlarged bored portion or annular recess at the upper end of thebolster-case B and seats against a shouldert' within the bolster-case,which is formed by said enlarged bore or recess. The cap F thus servesto prevent the escape of any surplus oil which may be pumped up to thebearing c by the spiral groove. Any such surplus oil passes into thegroove f and is conducted back to the oil-cup.

Above the cap F the spindle carries its driving-pulley G, which is fixedfast thereto.

I claim as my inventionl. The bolster-case B, having an internal boreand a reduced bearing c at its upper end, and the spindle D, extendingthrough the internal bore of said bolster-case and turning in saidbearing c,said spindle havinga reduced portion forming a shoulder 7L atthe bearing c, in combination with a cap F, removably secured to theupper end of the bolster-case and embracing the reduced portion of thespindle above said shoulder h, substantially as set forth.

2. The bolsteucase B, having bearing c and ICO an annular recesswithshoulder at its upper In witness whereof I havehereunto signed end, andaspindle D, turning insaid bearing my name in the presence o'f twosubscribing ro c, in combination with a cap F, screwing onto theexterior of said bolster-case and embracing said spindle, said cap Fhaving a downwardly-extending annular ange m, entering said recess andseatingonsad shoulder z', substantially as set forth.

witnesses.

t JAMES BLAIR.

Witnesses FRED. L. HILDRETH, J. ELMER HALL.

